| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| #ifndef _UAPI_TRACE_MMAP_H_ |
| #define _UAPI_TRACE_MMAP_H_ |
| |
| #include <linux/types.h> |
| |
| struct ring_buffer_meta { |
| unsigned long entries; |
| unsigned long overrun; |
| unsigned long read; |
| |
| unsigned long pages_touched; |
| unsigned long pages_lost; |
| unsigned long pages_read; |
| |
| __u32 meta_page_size; |
| __u32 nr_data_pages; /* Number of pages in the ring-buffer */ |
| |
| struct reader_page { |
| __u32 id; /* Reader page ID from 0 to nr_data_pages - 1 */ |
| __u32 read; /* Number of bytes read on the reader page */ |
| unsigned long lost_events; /* Events lost at the time of the reader swap */ |
| } reader_page; |
| }; |
| |
| #endif /* _UAPI_TRACE_MMAP_H_ */ |
